And henry koeiin



(No Model.) 2 Sheets-Sheet 1. S. BURTON.

APPARATUS FR MANUFACTURING SHEET IRON.

No. 585,334. Patented June 29, 1897 i l j" .1.

WITNESSES INVENTQR 2 Sheets-Sheet 2.

(No Model.)

S BURTON APPARATUS PoR MANUFACTURING SHEET IRON.

No. 585,334. Patented June Z9, 1897.

INVENTOR ux-l M FFICE..

ATENT SAMUEL BURTON, OF MARTINS FERRY, OHIO, ASSIGNOR TO HIMSELF, AND THOMAS DELANEY, OF PITTSBURG, PENNSYLVANIA, AND HENRY KOEHN- LEIN AND JAMES BOSTON, OF BRIDGEPORT, OHIO.

APPARATUS FOR MANUFACTURING SHEETLIRON.

SPECIFICATION forming part of Letters Patent No. 585,334, dated June 29, 189'?.

AppliGatOIl led February 27, 1896. Serial No. 581,019. (No model.)

To all whom, it may concern:

Be it known thatI,SAMUEL BURTON,of Martins Ferry, in the county of Belmont and,

State of Ohio, have invented a new and useful Improvement in Apparatus for the Manufacture of Sheet-Iron, of which the following is a full, clear, and exact description.

My invention relates to an apparatus for use in the manufacture of sheet-iron and 1o plates of iron and steel 5 and it consists in the matters hereinafter described, and referred to in the appended claim.

I will now describe my invention, so that others skilled in the art may employ the same,

reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a vertical sectional view of my improved furnace on the line I I of Fig. 2. zo Fig. 2 is aplan View, partially in section; and Fig. 3 is a vertical cross-sectional View on the line III III of Fig. l.

Like numerals of reference indicate like parts wherever they occur.

In the drawings, 2 represents the combustion-chamber of my improved heating and annealing furnaces, in rear of which combustion-chamber are the closed annealing-chainbers 3 3, which are formed of fire-brick have 3o ing tongue-and-g1'oove joints, so as to be impervious to the fiames and products of combustion. In rear of the bridgewall 4t is a central downtake-flue 5, that opens into hori- Zontal tlues 6, beneath the chambers 3, which flues 6 open into the uptake vertical flues 7 at the sides of the chambers 3, which lines communicate with the stack 8. At the rear of the furnace the chambers 3 are provided with doors through which the sheets are 4o placed in and removed from the furnace. Owing to this arrangement the chambers 3 are readily maintained at a temperature sufficient to reheat the sheets of metal preparatory to their passage through the finishingrolls without the sheets being brought in contact with the 'llames or products of combustion.

In the manufacture of sheet-iron the sheets are formed by rolling in the usual manner untilv the reheating, whereby the metal is 5o softened prior to the final pass through the finishing-rolls. At this step instead of piling the sheets in the ordinary reheating-furnace, where they are in direct contact with the products of combustion, I pile them in the closed muflles, (shown in the drawings and hereinbefore described) where they are heated while protected from the flames, products of combustion, and currents of air. One of these chambers is first filled and closed, and 6o then the second chamber, so that by the time the second chamber is filled the sheets in the first chamber may be brought to the proper heat for passage through the inishingrolls. When the sheets are brought to the proper heat, the chamber 3 is opened, and the sheets are passed to the finishing-rolls, and after being passed through these rolls the sheets are allowed to cool and need no annealing or pickling, as the hardening of the iron and 7o the formation of scale is prevented by reheating the sheets inthe mufiies 3.

The advantages of my invention will be apparent to those skilled in the art. Not only are the steps of annealing and pickling as ordinarily practiced done away with, thereby obviating the use of expensive material and appliances, but a far superior grade of metal can be manufactured.

It will be found that ordinarily the linal 8o annealing may be dispensed with, yet with certain grades of iron a final annealing may be advisable. In such case the sheets may be annealed in annealing-furnaces built on the plan of the furnaces shown in the draw- 8 5 ings or in the ordinary annealing-box.

What I claim, and desire to secure by Letters Patent, is-

The herein-described reheating or annealing furnace consist-ing in the parallel closed 9o chambers, having doors at one end and a bridge-wall at their other end, the fire-box and combustion-chamber at said bridge-wall, a horizontal flue extending from the upper edge of the bridge-wall over the tops of both said side 'lues communicate at their upper chambers and closed at its side, and rear end, ends; substantially as described. ro a central 'Vertical flue spacing said Chambers In testimony whereof I have hereunto set apart and communicating With the horizontal my hand.

top ue, transverse lues leading from the SAMUEL BURTON. lower end of said Central Vertical ue to the Vtnesses:

lower ends of vertical fines at the opposite JAMES K. BAKEWELL,

sides of said Chambers and a, stack with which F. E. IIARPELL. 

